A good wrist watch for kids is surprisingly difficult to fine. For a younger child with a smaller wrist, most watch band will not fit, and the watch face is too large. If you look for watches specifically market for kids, they are usually high on the cute/commercial branding/ factor, and low on usability and style.

After trying a few different ones, this Timex Unisex Expedition Watch with a Velcro strap is the clear winner. The winning design has:

small watch face that looks good on a child's wrist

velcro wrist band that adjusts to small wrist

large digits on the watch face for easy reading

multiple alarms

stop watch

and a cool Timex EL Backlight that actually works

Finally, it is reasonably priced.

On Amazon there is a blue and a plum version. My daughter has the blue version which looks great on her wrist. See the 42mm Apple Watch in comparison:

Note: This watch is different from the Timex IronKids watches. Those are ok, but this version is much better because the user interface is more intuitive, and the display is large while the watch size is the same.